| AccountAuthenticatorActivity | Base class for implementing an Activity that is used to help implement an AbstractAccountAuthenticator. | 
 
              
              | Activity | An activity is a single, focused thing that the user can do. | 
 
              
              | ActivityGroup | This class was deprecated in API level 13. Use the new FragmentandFragmentManagerAPIs instead; these are also available on older platforms through the Android compatibility package. | 
 
              
              | AlertDialog | A subclass of Dialog that can display one, two or three buttons. | 
 
              
              | AliasActivity | Stub activity that launches another activity (and then finishes itself) based on information in its component's manifest meta-data. | 
 
              
              | CharacterPickerDialog | Dialog for choosing accented characters related to a base character. | 
 
              
              | DatePickerDialog | A simple dialog containing an DatePicker. | 
 
              
              | Dialog | Base class for Dialogs. | 
 
              
              | DialogFragment | Static library support version of the framework's DialogFragment. | 
 
              
              | ExpandableListActivity | An activity that displays an expandable list of items by binding to a data source implementing the ExpandableListAdapter, and exposes event handlers when the user selects an item. | 
 
              
              | Fragment | Static library support version of the framework's Fragment. | 
 
              
              | FragmentActivity | Base class for activities that want to use the support-based FragmentandLoaderAPIs. | 
 
              
              | LauncherActivity | Displays a list of all activities which can be performed for a given intent. | 
 
              
              | ListActivity | An activity that displays a list of items by binding to a data source such as an array or Cursor, and exposes event handlers when the user selects an item. | 
 
              
              | ListFragment | Static library support version of the framework's ListFragment. | 
 
              
              | NativeActivity | Convenience for implementing an activity that will be implemented purely in native code. | 
 
              
              | PreferenceActivity | This is the base class for an activity to show a hierarchy of preferences to the user. | 
 
              
              | PreferenceFragment | Shows a hierarchy of Preferenceobjects as lists. | 
 
              
              | Presentation | Base class for presentations. | 
 
              
              | ProgressDialog | A dialog showing a progress indicator and an optional text message or view.  | 
 
              
              | TabActivity | This class was deprecated in API level 13. New applications should use Fragments instead of this class; to continue to run on older devices, you can use the v4 support library which provides a version of the Fragment API that is compatible down to DONUT. | 
 
              
              | TimePickerDialog | A dialog that prompts the user for the time of day using a TimePicker. | 
 
              
              | WebViewFragment | A fragment that displays a WebView. |